21007845

素因数分解:

$3^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{4363}}^1$

素因数の和:4481

約数の個数: 24

約数和(自身を含む): 36762336

約数和(自身を除く): 15754491

約数列:

[1, 3, 5, 9, 15, 45, 107, 321, 535, 963, 1605, 4363, 4815, 13089, 21815, 39267, 65445, 196335, 466841, 1400523, 2334205, 4201569, 7002615, 21007845]

約数ペア:

[(1, 21007845), (3, 7002615), (5, 4201569), (9, 2334205), (15, 1400523), (45, 466841), (107, 196335), (321, 65445), (535, 39267), (963, 21815), (1605, 13089), (4363, 4815)]